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A novel core-shell nanocomposite electrolyte for low temperature fuel cells
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology.
KTH, School of Industrial Engineering and Management (ITM), Energy Technology.
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2012 (English)In: Journal of Power Sources, ISSN 0378-7753, Vol. 201, 164-168 p.Article in journal (Refereed) Published
Abstract [en]

We report a rapid and cost-effective method to coat SDC nano-particles with a thin LiZn-oxide nanocomposite layer. This composite is determined to have a structure with two phases consisting of Li2O and ZnO and examined to distribute over the surfaces of SDC nano-particles uniformly by using energy dispersive X-ray (EDX) and high-resolution TEM (HRTEM). The measurments of electrical property demonstrate that such a thin layer enables the ionic conductivity of SDC to be significantly increased (higher than 0.1 S cm(-1) at the temperature of 300 degrees C) equivalent to the conductivity of pure SDC at 800 degrees C or YSZ at 1000 degrees C. This superionic conductivity is caused by the two-phase interfaces formed between nano-particles.

Place, publisher, year, edition, pages
2012. Vol. 201, 164-168 p.
Keyword [en]
SDC core-shell nanocomposite, Electrolyte, Low temperature fuel cells, Ionic conductivity
National Category
Energy Engineering
URN: urn:nbn:se:kth:diva-91610DOI: 10.1016/j.jpowsour.2011.10.084ISI: 000300264400022ScopusID: 2-s2.0-83655201182OAI: diva2:512939
QC 20120329Available from: 2012-03-29 Created: 2012-03-19 Last updated: 2012-03-29Bibliographically approved

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